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TQ = akar 8^2 + 6^2
TQ = akar 64 + 36
TQ = akar 100
TQ = 10 cm
panjang rusuk = 4 × 12 + 4 x 10
= 48 + 40
= 88 cm
panjang kawat = 5 x panjang rusuk
= 5 x 88
= 440 cm